TL431AQDBZR Description

The TL431AQDBZR is an adjustable Shunt Regulator with specified thermal stability. With the help of two external resistors, the output voltage can be adjusted to any value between Vref (about 2.5V) and 36V. The output impedance of the Voltage Reference TL431AQDBZR is typically 0.2R. Because the active output circuitry gives a very sharp turn-ON characteristic, this device is a good replacement for zener diodes in many applications, including onboard regulation, adjustable power supplies, and switching power supplies. Furthermore, low output drift versus temperature offers excellent stability across the full temperature range.

TL431AQDBZR Features

Low Output Noise
Reference Voltage Tolerance at 25°C
- 0.5% (B Grade)
- 1% (A Grade)
-2% (Standard Grade)
Adjustable Output Voltage: Vref to 36 V
Operation From -40*C to 125°C
Typical Temperature Drit (TL43xB)
-6mV(CTemp)
- 14 mV (| Temp, Q Temp)
0.2Ω Typical Output Ilmpedance
Sink-Current Capability: 1 mA to 100 mA

TL431AQDBZR Applications

Zener Replacement
Voltage Monitoring
Adjustable Voltage and Current Referencing
Secondary Side Regulation in Flyback SMPSs
Comparator with Integrated Reference